如何在SSRS中使用带有CASE表达式的多值参数？

Question

I am trying to use a case expression to flag which records have any of the ID's listed in my parameter. My code is something like this:

SELECT 
TRANSACTION_ID,
CASE WHEN CUSTOMER_ID IN (@PARAMETER) THEN 1 ELSE 0 END AS CUSTOMER_CLASS

It works fine if I only use one value when it asks for a parameter, but if I put more than one I get : An Expression of non-boolean type specified in a context where a condition is expected, near ','.

I've tried doing this several ways, including treating the parameter like it was a comma seperated string and trying to parse the substring. I can't figure out how the parameter is passed, but I keep getting problems.

I'm at wits end. Can anyone point me in the right direction?

Answer 1

As per your requirement, you should go for Dynamic query. Below code is working perfect.

        Declare  @sql varchar(max), 
                 @PARAMETER varchar(100) = '1,2,3,4' //For ex
        set @sql = 
            'SELECT 
            TRANSACTION_ID,
            CASE WHEN CUSTOMER_ID IN ('+@PARAMETER+') THEN 1 ELSE 0 END AS CUSTOMER_CLASS'; 
Execute(@sql)

Answer 2

case when [ReturnedBy] IN (SELECT Split FROM [dbo].[ufn_Split](@param_1, ',')) then 1 else 0 end